AllocationProfiler: Inital version of RecordObjectAllocation for hydrogen.

AllocationProfiler: Inital version of RecordObjectAllocation for hydrogen.
We are using hydrogen for stubs. So we would like to see the objects
that were allocated from hydrogen.

HAllocate has no enough information about memory chunks in the allocated memory fragment.
As example JSArray allocates as a single memory fragment but it has inside
three heap objects: array header, memento and fixed array for the elements.

The only way to report them separately is to do that on hydrogen level from the place where
we have the information about chunk sizes.

BUG=none

[loislo, 2013-10-24 15:10:34]

WIP